sometimes while building a project link error is thrown, while similar code runs perfectly in other projects? the error thrown is:

********************************
Compiling...
keyboard4.cpp
Linking...
msvcrtd.lib(crtexe.obj) : error LNK2001: unresolved external symbol _main
Debug/keyboard4.exe : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.

keyboard4.exe - 2 error(s), 0 warning(s)
***************************************

can anyone tell me why?

Hi smukher

This error usually occurs when you intend to make
a win32 application with MFC support, but inadvertently
you select console application as the type of your
project.

or when you by mistake add win32 application program
source files to a console application project.


Ankur Verma
.Net and C++ Specialist
Wiley Tech Support

You got this error because you did not include the CRT (C Runtime Library) in the compilation process.

Modify your project settings.
Go to Project >> Settings... menu item. Select Win32 Release from the Settings for combobox. Go to the C/C++ tab.
In the Preprocessor definitions box make sure
you delete any occurence of _MIN_CRT-like strings.

Ahmad Yassin
Microsoft Certified Professional
Alliedsoft